Volcanic eruptions

Pyroclastic material

Volcanic eruptions

Pyroclastic material

What is Pyroclastic material

Pyroclastic material is bunch of fragments of rocks that form during volcanic eruptions Pyroclastic material is a type of felsic magma that is formed during volcanic eruptions and because it has a higher viscosity It traps more gas that means violent eruptions shooting fire bombs

Types of Pyroclastic material

volcanic ash

Pyroclastic particles that are less then 2 mm in diameter

Volcanic dust

A cloud of particles that are less than0.25 in diameter

Lapilli

Volcanic rocks made out of Pyroclastic material that is less then 64 mm in diameter

volcanic ash

Pyroclastic particles that are less then 2 mm in diameter

Volcanic dust

A cloud of particles that are less than0.25 in diameter

Lapilli

Volcanic rocks made out of Pyroclastic material that is less then 64 mm in diameter

Quiet Eruptions

A oceanic volcanos are mostly made from mafic magma cause of the low viscosity

Pahoehoe

Pahoehoe is a type of mafic lava as it cools it becomes smooth & kind of ropy

Aa

Aa lava is basically deformed pahoehoe that becomes jagged chunks

Blocky lava

Blocky lava has higher silica which makes it more viscous while the top is solid the magma keeps flowing underneath

Pahoehoe

Pahoehoe is a type of mafic lava as it cools it becomes smooth & kind of ropy

Aa

Aa lava is basically deformed pahoehoe that becomes jagged chunks

Blocky lava

Blocky lava has higher silica which makes it more viscous while the top is solid the magma keeps flowing underneath

Types of volcanos

Volcanic activity produces a variety of different features that form during quiet & violent eruptions

Shield volcanoes

A shield volcano covers a wide area & forms from quiet eruptions

Cinder cones

Cinder cones form from violent eruptions & are made from pyroclastic material